Searching for aftermarket horn?

Installing aftermarket horns.
A second and more common solution is to electrically isolate the aftermarket horn from the chassis. Many single wire aftermarket horns are supplied with an electrically isolated mounting bracket plastic or rubber bushings around the screws for exactly this reason.

Kleinn Air Horns Too Loud? Too Bad!
Kleinn Air Horns is a U.S. manufacturer of extremely high quality air horns, train horns, complete onboard air and air horn systems. Our focus is to bring the finest quality pneumatic systems and components to the automotive aftermarket worldwide. We are constantly developing new 100% bolt-on, vehicle-specific systems for todays most popular vehicles.

High-Performance Horns: Sigma Automotive.
Hella products not only comply with the strict legal regulations but also with the much more demanding requirements made by vehicle manufacturers and the aftermarket. It goes without saying that all Hella horns have ECE type approval. Mitsuba Alpha II Compact Traditional European sound horn in the 480/400Hz.

Horns for Cars Trucks Air, Loud, Custom, Train CARiD.com.
Whether you need the piercing blast of an air horn or the distinction of an electronically generated sound, Hella offers abroad selection of 12V horns. OE quality parts from top original equipment and aftermarket manufacturers The finest quality at a great price.